Correlative atom-probe tomography and transmission electron microscope study of a chemical transition in a spinel on an oxidized nickel-based superalloy

Sung Il Baik, Xin Yin, David N. Seidman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Complex thermally grown oxides (TGOs) are formed on a single-crystal Ni-based superalloy due to a large fraction of alloying elements. Combining atom-probe tomography and transmission electron microscopy analyses, the three-dimensional elemental distributions of metal oxides of the spinel and refractory metal-oxide regions are presented. A spinel-type oxide, Ni(Cr,Al)2O4, is formed with a crystallographic orientation relationship with the alloy substrate, which decomposes into other oxides. The sequence of oxides observed in the TGO are NiO → Cr 2O3 → Ta2O5 → NiTaO 4, NiTa2O6 → Ni(Cr,Al)2O 4 → Al2O3.

Original languageEnglish (US)
Pages (from-to)909-912
Number of pages4
JournalScripta Materialia
Volume68
Issue number11
DOIs
StatePublished - Jun 2013

Keywords

  • Atom-probe tomography
  • Metal oxides
  • Ni-based superalloy
  • Spinel
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

Fingerprint Dive into the research topics of 'Correlative atom-probe tomography and transmission electron microscope study of a chemical transition in a spinel on an oxidized nickel-based superalloy'. Together they form a unique fingerprint.

Cite this